Wilfred Owen (18 March 1893 – 4 November 1918) was an English poet and soldier, regarded by many as one of the leading poets of the First World War. His shocking, realistic war poetry on the horrors of trenches and gas warfare was heavily influenced by his friend Siegfried Sassoon and sat in stark contrast to both the public perception of war at the time, and to the confidently patriotic verse written earlier by war poets such as Rupert Brooke. Some of his best-known works—most of which were published posthumously—include "Dulce et Decorum Est", "Insensibility", "Anthem for Doomed Youth", "Futility" and "Strange Meeting". His preface intended for a book of poems to be published in 1919 contains numerous well-known phrases, especially "War, and the pity of War", and "the Poetry is in the pity".
Dulce ET Decorum Est is a poem written by Wilfred Owen in 1917, during the First World War, and published posthumously in 1920. Owens’s poem is known for its horrific imagery and condemnation of war.

Bent double, like old beggars under sacks,
Knock-kneed, coughing like hags, we cursed through sludge,
Till on the haunting flares we turned out backs,
And towards our distant rest began to trudge.
Men marched asleep. Many had lost their boots,
But limped on, blood-shod. All went lame, all blind;
Drunk with fatigue; deaf even to the hoots
Of gas-shells dropping softly behind.

Gas! GAS! Quick, boys!--An ecstasy of fumbling
Fitting the clumsy helmets just in time,
But someone still was yelling out and stumbling
And flound'ring like a man in fire or lime.--
Dim through the misty panes and thick green light,
As under a green sea, I saw him drowning.

In all my dreams before my helpless sight
He plunges at me, guttering, choking, drowning.

If in some smothering dreams, you too could pace
Behind the wagon that we flung him in,
And watch the white eyes writhing in...